Table 2. Results of overall analysis and subgroup analysis in this meta-analysis.

Group	Dominant model	Additive model	Recessive model
Ethnicity
Caucasian	1.13 (0.90–1.41)	1.02 (0.96–1.08)	1.08 (0.92–1.27)
African-American	1.09 (0.75–1.58)	1.24 (1.05–1.47)	0.56 (0.30–1.03)
Mixed	1.10 (1.01–1.21)	1.07 (0.96–1.18)	0.95 (0.84–1.09)
Menopausal status
Premenopausal	1.90 (0.73–4.91)	1.08 (0.98–1.19)	2.24 (0.48–10.35)
Postmenopausal	0.98 (0.86–1.12)	0.93 (0.86–1.01)	1.02 (0.87–1.21)
Genotyping method
PCR-RFLP	1.27 (1.08–1.49)	1.15 (1.02–1.29)	0.90 (0.70–1.17)
TaqMan Real Time PCR	1.08 (0.96–1.22)	1.04 (1.00–1.13)	0.93 (0.72–1.20)
MassARRAY Sequenome	0.83 (0.68–1.02)	0.98 (0.88–1.09)	0.97 (0.83–1.13)
Control source
Population	1.14 (1.02–1.28)	1.09 (1.01–1.18)	0.95 (0.80–1.13)
Hospital	1.03 (0.83–1.29)	1.00 (0.89–1.10)	0.95 (0.82–1.10)
Overall OR	1.12 (1.02–1.24)	1.07 (1.01–1.14)	0.95 (0.84–1.09)